JK-Sliding Elastomeric Bridge Bearing
New Sliding Elastomeric Bridge Bearing
Sliding Elastomeric Bridge Bearing is a basic buffing material that absorbs and blocks the noise, vibration and shock to the structure. The coefficient of friction for the displacement of upper plate due to contraction by temperature and drying and warping and for the rotary movement generated from entering vehicles' weight is minimized. And it is designed and developed to accommodate the displacement and deformation generated horizontally.
As a method of shutting off the heat delivered from the outside and upper/lower part of shoe plate, it is aiming to lengthen the life and elasticity of the elastomeric bearing. 4 exposing faces of the elastomeric bearing is coated with special liquid fluorine rubber. And the hardening and aging phenomenon of the elastomeric bearing due to the air temperature, air contact, acid rain, etc. are minimized.
1. Applies : Concrete Bridge
2. Applies : Upper and lower welding installation
※Patent Name :
| Sliding Elastomeric Bridge Bearing. |
| Patent No. : 10-1201957 |
Material of Allowable Stress (kg/㎠)
|
Material
|
Axial Stress δa
|
Bowing Stress δa
|
Shear Stress δa
|
|
Tension
|
Compression
|
Tension
|
Compression
|
General
|
Bolt
|
Anchor Bolt
|
ARC Welding
|
|
SS400
|
1,400
|
1,400
|
1,400
|
1,400
|
800
|
900
|
600
|
800
|
|
SM45C
|
1,900
|
1,900
|
1,900
|
1,900
|
1,100
|
1,200
|
800
|
|
|
SCMn2A
|
1,900
|
1,900
|
1,900
|
1,900
|
1,100
|
|
|
|
|
SCMn1A
|
1,700
|
1,700
|
1,700
|
1,700
|
1,000
|
|
|
|
|
SC450
|
1,400
|
1,400
|
1,400
|
1,400
|
800
|
|
|
|
|
SM490B
|
1,400
|
1,400
|
1,400
|
1,400
|
800
|
|
|
800
|
Material of Allowable Practice stress (kg f/㎠)
| PTFE ＆ B/P |
PTFE HBsC4 +STS |
400 |
Upper Bearing
|
1Level |
SCMN 2A+SM490B |
2,800 |
| 2Level |
SCMN 1A+SM490B |
2,500 |
| 3Level |
SC450+SM490B |
2,100 |
| Lower Bearing |
1Level |
SCMN 2A+CON′C |
80
|
| 2Level |
SCMN 1A+CON′C |
| 3Level |
SC450+CON′C |
| Adhesion(Square) |
SS400+CON′C |
6.5 |
PTFE Attrition Rate and the Coefficient of Friction Test Result
A.Test conditions and introduction
| Test Piece PTFE |
Sliding
Counter Part |
Pressure |
Stock |
Speed |
| Virgin PTFE |
Stainless Steel |
50MPa(510kg/㎠) |
±20mm |
17mm/sec |
| Filed PTFE |
Stainless Steel |
50MPa(510kg/㎠) |
±20mm |
17mm/sec |
B.Test Result
| Test Piece |
Coefficient of Friction |
SPE, Wear Rate |
Test Stocks |
| Virgin |
0.071 |
|
4,590 |
| Filed PTFE |
0.085 |
|
12,240 |
